Clamp



(No Model.) 2 Sheets-Sheet l.

A. KRAISS.

CLAMP.

No. 262,233. Patented Aug. 8, 1882.

iiiiiiil t ll PETERS. Phm-ui mmpher. Washinglom D. c.

(No Model.) 2 Sheets-Sheet 2-.

A. KRAISS.

T CLAMP.

No. 262,233. Patented Aug. 8, 1882.

NiTED STATES PATENT OFFICE.

ANDREW KRAISS, OF NEW MILFORD, OHIO.

CLAMP.

SPECIFICATION forming part of Letters Patent No. 262,233, dated August8, 1882,

Application filed April 19, 1882.

T 0 all whom it may concern Be it known that I, ANDREW KRAISS, of NewMilford, Portage county, Ohio, have invented a new and usefulImprovement in Clamps, of which the following is a specification.

My invention relates to clamps connected with each other by ascrew-threaded rod for the purpose of holding and compressing gluedpieces of wood or other material forming miter and other joints.

In the drawings, Figure lis a plan. Fig. 2 is a plan showing twoscrew-threaded rods connecting the clamp. Fig. 3 is an end elevation.Fig. 4. is a section of the clamp at the line as in Fig. 2, andrepresenting the rod and sleeves in position.

Clamp a has a set-screw, b, by which to fasten it, and is similar to anordinary clamp, except that it is formed with an opening, 0, to receiverod f, and with slots at and seats 0 to receive sleeve 0 and pins z.Clamp a is similarly formed, except that its opening 0 is screwthreadedto connect with the screwthread on rod f. Sleeve 6 in slot 61 of clamp ais also formed with an internal screw-thread to connect with rodf. Thehead h of rod f is suitably formed for turningthe rod. It preferred,both sleeves e 6 may be threaded, and both right-hand and left-handthreads be formed on rod f to connect with the threads on the sleeves.

In operating the device clamps to a are first to be placed on pieces gg, ot'wood or other material, which are to be joined together. It thetwo pieces g g are to bejoined in such manner as to require noadjustment of rod f to clamps a a, the pieces may be compressed byinserting rod f through openings 0 0 in clamps a a and turning the rod;but if the jointing of pieces 9 g be such as to require an adjustment ofthe relative position of rodf to clamps a a,

(No model.)

as shown in Fig. 1, the rod f, with sleeves e 0, should be placed inslots d of the clamps, with pins 5 in seats a to allow the rod andclamps to assume such relative position as may be necessary to make thejoint. Clamps a a are to be firmly fastened to pieces g g by turningset-screws b, and then the pieces may be compressed by turning rod f.

In the form ot'jointed pieces 9, as shown in Fi s. 2, 3, and 4, it maybe advantageous, in or er to obtain a more direct pressure, to use tworods f, as shown, one on each side of pieces g.

Sleeves e e should be made to fit slots d, in order to prevent theturning of the clamps on their set-screws b.

In adjusting the above described device pins t of sleeves e e should beplaced in such seats 0 of clamps a a as will cause the most directpressure to be brought to bear on the joint formed by pieces 1.

I claim as my invention- 1. The clamp a, formed with two jaws or arms,and a screw, b, for clamping articles between the arms, and a suitableopening, 0, to receive screw-rodf, in combination with clamp a,similarly formed, and with screw-rod f, extending through said openings,one of which is screw-threaded to receive the screw-th readed part ofrod f for the purpose of clamping together an article held in clamp aand an article held in clamp a, substantially as described.

2. The clamps a a, each formed with one or more slots, cl, to receivesleeves e 6, one of the sleeves being threaded, and seats 0 to receivepins'i, in combination with sleeves e 6, pins 1', and the screw-threadedrod f, substantially as described.

ANDREW KRAISS.

Witnesses:

BRADFORD HOWLAND, GEO. F. ROBINSON.

